I was going to say the same thing lol.
On the topic:
I've been playing Online games since I was a kid back in RS/D2 2001. I've continued to play them while moving on to the actual Toxic games such as CoD 07 and League 2012. I've basically heard and seen it all at this point and never has it actually phased me in the slightest. People say things to either get under your skin/in your head to make you play worse (generally from opponents) or to make you feel bad and themselves feel better for their own short comings (whether in game or real life).
Fact of the matter is, life isn't nice, it isn't easy, and people are from time to time, dicks. Most people who play serious games such as Leagues are all Gamers/Nerds who more then likely got picked on in school or at the very least didn't fit in with most everyone else. So they use online games as a gateway to be dicks to in a way get back at the world for what has happened to them, or escape their own troubles. I'm not saying everyone is like this or had these problems in school, just most gamers.